X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fio.h;h=f6c2ee3bd81cd149b7f8da4866e48c32750765b7;hb=eb8bbf48e79a8c6afd3c84e3d64263d10ee45daa;hp=89d7bf94d1c72b9ca160d0b2c4c6f21fbc9296b3;hpb=8914a9d83c67a2ead861ac997a1d4b06d02639bc;p=fio.git diff --git a/fio.h b/fio.h index 89d7bf94..f6c2ee3b 100644 --- a/fio.h +++ b/fio.h @@ -6,10 +6,10 @@ #include #include #include -#include #include #include #include +#include #include "list.h" #include "md5.h" @@ -101,15 +101,50 @@ struct group_run_stats { unsigned long long agg[2]; }; +enum fio_ddir { + DDIR_READ = 0, + DDIR_WRITE, +}; + +/* + * What type of allocation to use for io buffers + */ +enum fio_memtype { + MEM_MALLOC = 0, /* ordinary malloc */ + MEM_SHM, /* use shared memory segments */ + MEM_MMAP, /* use anonynomous mmap */ +}; + +/* + * The type of object we are working on + */ +enum fio_filetype { + FIO_TYPE_FILE = 1, + FIO_TYPE_BD, + FIO_TYPE_CHAR, +}; + +enum fio_iotype { + FIO_SYNCIO = 1 << 0, + FIO_MMAPIO = 1 << 1 | FIO_SYNCIO, + FIO_LIBAIO = 1 << 2, + FIO_POSIXAIO = 1 << 3, + FIO_SGIO = 1 << 4, + FIO_SPLICEIO = 1 << 5 | FIO_SYNCIO, +}; + +/* + * This describes a single thread/process executing a fio job. + */ struct thread_data { - char name[64]; - char file_name[256]; + char name[32]; + char *file_name; char *directory; char verror[80]; pthread_t thread; int thread_number; int groupid; - int filetype; + enum fio_filetype filetype; int error; int fd; void *mmap; @@ -118,39 +153,42 @@ struct thread_data { size_t orig_buffer_size; volatile int terminate; volatile int runstate; - volatile int old_runstate; - unsigned int ddir; + enum fio_ddir ddir; unsigned int iomix; unsigned int ioprio; - unsigned int sequential; + + unsigned char sequential; + unsigned char odirect; + unsigned char create_file; + unsigned char invalidate_cache; + unsigned char create_serialize; + unsigned char create_fsync; + unsigned char end_fsync; + unsigned char sync_io; + unsigned char verify; + unsigned char use_thread; + unsigned char do_disk_util; + unsigned char override_sync; + unsigned int bs; unsigned int min_bs; unsigned int max_bs; - unsigned int odirect; unsigned int thinktime; unsigned int fsync_blocks; unsigned int start_delay; unsigned int timeout; - unsigned int io_engine; - unsigned int create_file; + enum fio_iotype io_engine; unsigned int overwrite; - unsigned int invalidate_cache; unsigned int bw_avg_time; - unsigned int create_serialize; - unsigned int create_fsync; - unsigned int end_fsync; unsigned int loops; unsigned long long file_size; unsigned long long real_file_size; unsigned long long file_offset; unsigned long long zone_size; unsigned long long zone_skip; - unsigned int sync_io; - unsigned int mem_type; - unsigned int verify; + enum fio_memtype mem_type; unsigned int stonewall; unsigned int numjobs; - unsigned int use_thread; unsigned int iodepth; os_cpu_mask_t cpumask; unsigned int jobnum; @@ -166,14 +204,17 @@ struct thread_data { FILE *iolog_f; char *sysfs_root; - char *ioscheduler; - struct drand48_data bsrange_state; - struct drand48_data verify_state; + os_random_state_t bsrange_state; + os_random_state_t verify_state; int shm_id; + /* + * IO engine hooks, contains everything needed to submit an io_u + * to any of the available IO engines. + */ void *io_data; char io_engine_name[16]; int (*io_prep)(struct thread_data *, struct io_u *); @@ -184,10 +225,16 @@ struct thread_data { void (*io_cleanup)(struct thread_data *); int (*io_sync)(struct thread_data *); + /* + * Current IO depth and list of free and busy io_u's. + */ unsigned int cur_depth; struct list_head io_u_freelist; struct list_head io_u_busylist; + /* + * Rate state + */ unsigned int rate; unsigned int ratemin; unsigned int ratecycle; @@ -205,9 +252,12 @@ struct thread_data { unsigned long long zone_bytes; unsigned long long this_io_bytes[2]; unsigned long long last_pos; - sem_t mutex; + volatile int mutex; - struct drand48_data random_state; + /* + * State for random io, a bitmap of blocks done vs not done + */ + os_random_state_t random_state; unsigned long *file_map; unsigned int num_maps; @@ -228,18 +278,21 @@ struct thread_data { struct timeval start; /* start of this loop */ struct timeval epoch; /* time job was started */ + /* + * fio system usage accounting + */ struct rusage ru_start; struct rusage ru_end; unsigned long usr_time; unsigned long sys_time; unsigned long ctx; - unsigned int do_disk_util; - unsigned int override_sync; - - struct drand48_data rwmix_state; + /* + * read/write mixed workload state + */ + os_random_state_t rwmix_state; struct timeval rwmix_switch; - int rwmix_ddir; + enum fio_ddir rwmix_ddir; /* * Pre-run and post-run shell @@ -247,6 +300,9 @@ struct thread_data { char *exec_prerun; char *exec_postrun; + /* + * IO historic logs + */ struct list_head io_hist_list; struct list_head io_log_list; }; @@ -268,41 +324,11 @@ extern int exitall_on_terminate; extern int thread_number; extern int shm_id; extern int groupid; +extern FILE *f_out; +extern FILE *f_err; extern struct thread_data *threads; -enum { - DDIR_READ = 0, - DDIR_WRITE, -}; - -/* - * What type of allocation to use for io buffers - */ -enum { - MEM_MALLOC, /* ordinary malloc */ - MEM_SHM, /* use shared memory segments */ - MEM_MMAP, /* use anonynomous mmap */ -}; - -/* - * The type of object we are working on - */ -enum { - FIO_TYPE_FILE = 1, - FIO_TYPE_BD, - FIO_TYPE_CHAR, -}; - -enum { - FIO_SYNCIO = 1 << 0, - FIO_MMAPIO = 1 << 1 | FIO_SYNCIO, - FIO_LIBAIO = 1 << 2, - FIO_POSIXAIO = 1 << 3, - FIO_SGIO = 1 << 4, - FIO_SPLICEIO = 1 << 5 | FIO_SYNCIO, -}; - #define td_read(td) ((td)->ddir == DDIR_READ) #define td_write(td) ((td)->ddir == DDIR_WRITE) #define td_rw(td) ((td)->iomix != 0) @@ -391,4 +417,28 @@ extern void rate_throttle(struct thread_data *, unsigned long, unsigned int); extern int parse_options(int, char **); extern int init_random_state(struct thread_data *); +/* + * This is a pretty crappy semaphore implementation, but with the use that fio + * has (just signalling start/go conditions), it doesn't have to be better. + * Naturally this would not work for any type of contended semaphore or + * for real locking. + */ +static inline void fio_sem_init(volatile int volatile *sem, int val) +{ + *sem = val; +} + +static inline void fio_sem_down(volatile int volatile *sem) +{ + while (*sem == 0) + usleep(10000); + + (*sem)--; +} + +static inline void fio_sem_up(volatile int volatile *sem) +{ + (*sem)++; +} + #endif